Hi all,
A driver exposes its API by ioctl interface.
The argument for the ioctl call is a memory buffer that its address
must aligned to OS page size.
For example the allocation in C would call valloc (or posix_memalign)
Simple Perl allocation of the buffer like this:
$buffer = "\0" x BUFFER_SIZE ;
is not enough since most probably the starting address of the scalar
wont be aligned to OS page size.
Is there a simple way to achieve this?
Note: I convert the buffer to the C address like this:
my $c_address = unpack('Q', pack('P', $buffer));
Thanks!
Eyal
